package com.sky.service.user.impl;

import com.sky.domain.*;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.ShopIDNotNULLException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.user.*;
import com.sky.result.Result;
import com.sky.service.user.OrderService;
import com.sky.utils.MapUtils;
import com.sky.vo.OrderSubmitVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

/**
 * 订单
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private MerchantMapper merchantMapper;

    /**
     * 预计送达时间
     *
     * @param shopId
     * @param customerAddress
     * @return
     */
    @Override
    public Result<String> getgetEstimatedDeliveryTime(Integer shopId, String customerAddress) {

        //获取所有菜品的制作时间
        Long currentId = BaseContext.getCurrentId();
        Integer makeTimeCost = shoppingCartMapper.getMakeTimeByUserId(currentId);

        //计算配送地址和商家地址之间的配送时间
        Merchant merchant = merchantMapper.getShopById(shopId.longValue());
        if(merchant==null){
            throw new ShopIDNotNULLException("找不到商家信息");
        }
        //工具类，直接使用
        Integer towPointCost = MapUtils.baoiduTwoPointCostTime(merchant.getShopAddress(), customerAddress);

        //预计送达时间 = 当前时间+菜品制作时间+配送时间+预留10分钟
        Integer allCost = makeTimeCost*60+towPointCost+600;
        LocalDateTime estimatedDeliveryTime = LocalDateTime.now().plusSeconds(allCost);
        return Result.success(estimatedDeliveryTime.toString());
    }

   /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、超出配送范围、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
               order.setAddress(addressBook.getProvinceName()+addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        order.setConsignee(addressBook.getConsignee());
        order.setNumber(UUID.randomUUID().toString().replaceAll("-",""));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());

        //预计送达时间
        order.setDeliveryTime(ordersSubmitDTO.getEstimatedDeliveryTime());
        //出餐时间
        Integer makeTime = shoppingCartMapper.getMakeTimeByUserId(BaseContext.getCurrentId());
        order.setMealTime(LocalDateTime.now().plusMinutes(makeTime));

        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }
    
}